<?php
	class smtp
	{
		/* Public Variables */
		var $smtp_port;
		var $time_out;
		var $host_name;
		var $log_file;
		var $relay_host;
		var $debug;
		var $auth;
		var $user;
		var $pass;
		
		/* Private Variables */
		var $sock;
		
		/* Constractor */
		function smtp($relay_host = "", $smtp_port = 25,$auth = false,$user,$pass)
		{
			$this->debug = FALSE;
			$this->smtp_port = $smtp_port;
			$this->relay_host = $relay_host;
			$this->time_out = 30; //is used in fsockopen()
			#
			$this->auth = $auth;//auth
			$this->user = $user;
			$this->pass = $pass;
			#
			$this->host_name = "localhost"; //is used in HELO command
			$this->log_file ="";
			
			$this->sock = FALSE;
		}
		
		/* Main Function */
		function sendmail($to, $from, $subject = "", $body = "", $mailtype, $cc = "", $bcc = "", $additional_headers = "")
		{
			$mail_from = $this->get_address($this->strip_comment($from));
			$body = ereg_replace("(^|(\r\n))(\\.)", "\\1.\\3", $body);
			$header .= "MIME-Version:1.0\r\n";
			if($mailtype=="HTML"){
				$header .= "Content-Type:text/html\r\n";
			}
			$header .= "To: ".$to."\r\n";
			if ($cc != "") {
				$header .= "Cc: ".$cc."\r\n";
			}
			$header .= "From: $from<".$from.">\r\n";
			$header .= "Subject: ".$subject."\r\n";
			$header .= $additional_headers;
			$header .= "Date: ".date("r")."\r\n";
			$header .= "X-Mailer:By Redhat (PHP/".phpversion().")\r\n";
			list($msec, $sec) = explode(" ", microtime());
			$header .= "Message-ID: <".date("YmdHis", $sec).".".($msec*1000000).".".$mail_from.">\r\n";
			$TO = explode(",", $this->strip_comment($to));
			
			if ($cc != "") {
				$TO = array_merge($TO, explode(",", $this->strip_comment($cc)));
			}
			
			if ($bcc != "") {
				$TO = array_merge($TO, explode(",", $this->strip_comment($bcc)));
			}
			
			$sent = TRUE;
			foreach ($TO as $rcpt_to) {
				$rcpt_to = $this->get_address($rcpt_to);
				if (!$this->smtp_sockopen($rcpt_to)) {
					$this->log_write("Error: Cannot send email to ".$rcpt_to."\n");
					$sent = FALSE;
					continue;
				}
				if ($this->smtp_send($this->host_name, $mail_from, $rcpt_to, $header, $body)) {
					$this->log_write("E-mail has been sent to <".$rcpt_to.">\n");
					} else {
					$this->log_write("Error: Cannot send email to <".$rcpt_to.">\n");
					$sent = FALSE;
				}
				fclose($this->sock);
				$this->log_write("Disconnected from remote host\n");
			}
			echo "<br>";
			echo $header;
			return $sent;
		}
		
		/* Private Functions */
		
		function smtp_send($helo, $from, $to, $header, $body = "")
		{
			if (!$this->smtp_putcmd("HELO", $helo)) {
				return $this->smtp_error("sending HELO command");
			}
			#auth
			if($this->auth){
				if (!$this->smtp_putcmd("AUTH LOGIN", base64_encode($this->user))) {
					return $this->smtp_error("sending HELO command");
				}
				
				if (!$this->smtp_putcmd("", base64_encode($this->pass))) {
					return $this->smtp_error("sending HELO command");
				}
			}
			#
			if (!$this->smtp_putcmd("MAIL", "FROM:<".$from.">")) {
				return $this->smtp_error("sending MAIL FROM command");
			}
			
			if (!$this->smtp_putcmd("RCPT", "TO:<".$to.">")) {
				return $this->smtp_error("sending RCPT TO command");
			}
			
			if (!$this->smtp_putcmd("DATA")) {
				return $this->smtp_error("sending DATA command");
			}
			
			if (!$this->smtp_message($header, $body)) {
				return $this->smtp_error("sending message");
			}
			
			if (!$this->smtp_eom()) {
				return $this->smtp_error("sending <CR><LF>.<CR><LF> [EOM]");
			}
			
			if (!$this->smtp_putcmd("QUIT")) {
				return $this->smtp_error("sending QUIT command");
			}
			
			return TRUE;
		}
		
		function smtp_sockopen($address)
		{
			if ($this->relay_host == "") {
				return $this->smtp_sockopen_mx($address);
				} else {
				return $this->smtp_sockopen_relay();
			}
		}
		
		function smtp_sockopen_relay()
		{
			$this->log_write("Trying to ".$this->relay_host.":".$this->smtp_port."\n");
			$this->sock = @fsockopen($this->relay_host, $this->smtp_port, $errno, $errstr, $this->time_out);
			if (!($this->sock && $this->smtp_ok())) {
				$this->log_write("Error: Cannot connenct to relay host ".$this->relay_host."\n");
				$this->log_write("Error: ".$errstr." (".$errno.")\n");
				return FALSE;
			}
			$this->log_write("Connected to relay host ".$this->relay_host."\n");
			return TRUE;;
		}
		
		function smtp_sockopen_mx($address)
		{
			$domain = ereg_replace("^.+@([^@]+)$", "\\1", $address);
			if (!@getmxrr($domain, $MXHOSTS)) {
				$this->log_write("Error: Cannot resolve MX \"".$domain."\"\n");
				return FALSE;
			}
			foreach ($MXHOSTS as $host) {
				$this->log_write("Trying to ".$host.":".$this->smtp_port."\n");
				$this->sock = @fsockopen($host, $this->smtp_port, $errno, $errstr, $this->time_out);
				if (!($this->sock && $this->smtp_ok())) {
					$this->log_write("Warning: Cannot connect to mx host ".$host."\n");
					$this->log_write("Error: ".$errstr." (".$errno.")\n");
					continue;
				}
				$this->log_write("Connected to mx host ".$host."\n");
				return TRUE;
			}
			$this->log_write("Error: Cannot connect to any mx hosts (".implode(", ", $MXHOSTS).")\n");
			return FALSE;
		}
		
		function smtp_message($header, $body)
		{
			fputs($this->sock, $header."\r\n".$body);
			$this->smtp_debug("> ".str_replace("\r\n", "\n"."> ", $header."\n> ".$body."\n> "));
			
			return TRUE;
		}
		
		function smtp_eom()
		{
			fputs($this->sock, "\r\n.\r\n");
			$this->smtp_debug(". [EOM]\n");
			
			return $this->smtp_ok();
		}
		
		function smtp_ok()
		{
			$response = str_replace("\r\n", "", fgets($this->sock, 512));
			$this->smtp_debug($response."\n");
			
			if (!ereg("^[23]", $response)) {
				fputs($this->sock, "QUIT\r\n");
				fgets($this->sock, 512);
				$this->log_write("Error: Remote host returned \"".$response."\"\n");
				return FALSE;
			}
			return TRUE;
		}
		
		function smtp_putcmd($cmd, $arg = "")
		{
			if ($arg != "") {
				if($cmd=="") $cmd = $arg;
				else $cmd = $cmd." ".$arg;
			}
			
			fputs($this->sock, $cmd."\r\n");
			$this->smtp_debug("> ".$cmd."\n");
			
			return $this->smtp_ok();
		}
		
		function smtp_error($string)
		{
			$this->log_write("Error: Error occurred while ".$string.".\n");
			return FALSE;
		}
		
		function log_write($message)
		{
			$this->smtp_debug($message);
			
			if ($this->log_file == "") {
				return TRUE;
			}
			
			$message = date("M d H:i:s ").get_current_user()."[".getmypid()."]: ".$message;
			if (!@file_exists($this->log_file) || !($fp = @fopen($this->log_file, "a"))) {
				$this->smtp_debug("Warning: Cannot open log file \"".$this->log_file."\"\n");
				return FALSE;
			}
			flock($fp, LOCK_EX);
			fputs($fp, $message);
			fclose($fp);
			
			return TRUE;
		}
		
		function strip_comment($address)
		{
			$comment = "\\([^()]*\\)";
			while (ereg($comment, $address)) {
				$address = ereg_replace($comment, "", $address);
			}
			
			return $address;
		}
		
		function get_address($address)
		{
			$address = ereg_replace("([ \t\r\n])+", "", $address);
			$address = ereg_replace("^.*<(.+)>.*$", "\\1", $address);
			
			return $address;
		}
		
		function smtp_debug($message)
		{
			if ($this->debug) {
				echo $message."<br>";
			}
		}
		
		function get_attach_type($image_tag) { //
			
			$filedata = array();
			
			$img_file_con=fopen($image_tag,"r");
			unset($image_data);
			while ($tem_buffer=AddSlashes(fread($img_file_con,filesize($image_tag))))
			$image_data.=$tem_buffer;
			fclose($img_file_con);
			
			$filedata['context'] = $image_data;
			$filedata['filename']= basename($image_tag);
			$extension=substr($image_tag,strrpos($image_tag,"."),strlen($image_tag)-strrpos($image_tag,"."));
			switch($extension){
				case ".gif":
				$filedata['type'] = "image/gif";
				break;
				case ".gz":
				$filedata['type'] = "application/x-gzip";
				break;
				case ".htm":
				$filedata['type'] = "text/html";
				break;
				case ".html":
				$filedata['type'] = "text/html";
				break;
				case ".jpg":
				$filedata['type'] = "image/jpeg";
				break;
				case ".tar":
				$filedata['type'] = "application/x-tar";
				break;
				case ".txt":
				$filedata['type'] = "text/plain";
				break;
				case ".zip":
				$filedata['type'] = "application/zip";
				break;
				default:
				$filedata['type'] = "application/octet-stream";
				break;
			}
			
			
			return $filedata;
		}
		
	}
?>
